Needle-cylinder for knitting-machines.



A. M. PIGEON. NEEDLE CYLINDER FOR KNITTING MACHINES.

APPLICATION FlLED JUNE 6. 916.

LQQQWK Patented Mar.27,1917.

2 SHEETS-SHEET I.

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A. M. PIGEON.

NEEDLE CYLINDER FOR KNITTING MACHINES.

APPLICATION FILED JUNE 6.1916.

Patented Mar. 27, 1917.

2 SHEETS-SHEET 2.

' ALBERT M. .IPIGEON,

or nonarsrown, I '00., or nonnrs'rown, rnnnsrnvanm, a

PENNSYLVANIA, ASSIGNOR TO WILDMAN MFG.

CORPORATION OF PENNSYLVANIA.

NEEDLE-CYLINDER, FOE. KNITTING-MACHINES.

Specification of Letters Patent.

Patented Mar. 2%, Twit.

Application filed June 6, 1916. Serial No. 1019M.

To all whom it may concern:

Be it known that I, ALBERT M. PIGEON,

a citizen of the United States, resi Norristown,

ding at Pennsylvania, have invented certain new and useful Improvements in Needle-Cylinders for Knitting -Machines,

of which the following is a specification.

The invention relates to needle carrlers, circular or the needle grooves knitting machine straight, in which are provided by walls that may .be tempered steel strips inserted in shallow slots formed in the carrier ous means have been Variheretofore employed for holdingsuch walls in place, such as engaging the ends of theshaped for the purpose, with cl plates, rings and shoulders, which walls, specially amping are designed to hold the needle walls firmly in the bottom of the slots, and'aga'inst endwise movement, the intermediate portion of the walls simply resting in out being fastened other than at the grooves withtheir ends.

My invention contemplates holding the walls rigidly at various, or all points throughout their length by a system of swaging, expanding, metal of the carrier, walls.

between the and compressing the needle The invention consists in the features and combination, and arrangement hereinafter described pointed out in the'claims.

In the accompanying drawings; Figure 1,is inder with a few walls represented of parts and particularly a face view of a needle cylin connection therewith, it being thought unnecessary to illustrate the walls all around the cylinder.

Fig. 2 is a sectional view of a part of a cylinder with walls inserted therein, with the walls tightened by compressed and expanded metal between the walls.

Fig. 3 is an exaggerated view of needle walls showing the walls in staggered compressed carrier, in the shallow grooves.

Fig. 4 is a view of the tools or imp areas of the place and the needle for holding the needle walls tight lements that satisfactorily effect the swaging or compressing of the metal in staggered relation in the needle carrier. Fig. 5 is a sectional view of a desirable form of a needle cylinder with the walls in place, arrows indicating the compre swaged portions.

ssed, or

Fig. 6 is a fra carrier of the stralght bar type, walls in place, and arrows pointing to the swaged metal areas for holding the walls tight in their grooves.

Fig. 7 shows leaning Walls that are improperly tightened by staking or swaging.

Fig. 8 illustrates generally appliances by which the swaging can be accomplished,

In carrying out the invention I form shallow grooves in the needle carrier approximating in width the thickness of the walls which are to be held therein, say for instance, the wall is intendedto be .022 of an inch in thickness and the groove to receive it is calculated to be from 022% up to say .023 of an inch in width. The -'wall when inserted may be clamped to the needle carrier at its upper and lower ends in any suitable way.

It has been demonstrated in practice that the grooves for the inserted walls are likely showing the to vary from the exact size desired, due to Therefore it is not practicable to attempt to make the walls and slots of any exact size, to avoid looseness of the wall in its slot. Clamping the walls at both ends does not prevent the walls from having some looseness sidewise in the grooves. This slight movement develops more looseness in time, until a point is reached where the wall is too loose to be practical or operative, and in the usual practice the machine operator replaces the loose wall with a new one slightly thicker.

By the present method the walls are tightened the whole length of the wall, and less care is necessary in making the slots, and the walls. By the improved method, looseness of the wall in the slot, when the ental view of a'needle parts are assembled, is of no consequence as the walls of the carrier ngsswage, As shown in Fig.1 the needle guidmg i may be held by a clamp rin B. t-

- spaced at suitable distances apart. This between the inserted walls.

, and g r1p the inserted wall.

as 5, shown in Fig. 4 is used in "objectionable in other ways.

. pose is shown in Fig.

The present s'stem of swaging does not tend to lean e walls-(progressively while they are beone after another.

walls may be held in the cylinder grooves at their upper ends y interengaging parts as at A and at their lower ends intermediate points a a ong the length of the needle wall I compress or swage the metal of the needle carrier, which is ex osed between the walls I) and which is sufliciently soft to allow this, by any suitable instrument so that as shown in Figs. 2, 3, 5 and 6 the ,metal will be pressed laterally and will thus firmly grip the inserted wall. One form of implement which may be used for this pur- 4, consisting of a plate or bar having points or pro ections 5' platev or bar may be of substantially the same thickness as the width of the space between adjacent inserts so that the projections 5' when resting on the face of the needle carrier will extend substantially over the entire width of the metal of the carrier Now upon delivering a blow upon the bar or plate 5,

the metal will be depressed as indicated at m,

Fig. 2, and will be caused to press laterally One-of the implements,

one space between the inserted walls and the other implement 6, shown in saidfigure is used in the next space between the walls and so on among all the grooves of the needle carrier.

" spots or portions it ,46 7 spots are located first on one side of the wall,

Because of the relative spacing of the projections 5' and 6 on the two implements,

the swagings will occur in staggered relation in the carrier so'that considering one of the inserted walls in relation to the swaged will be seen'that these a then on the other side in staggered relation,

each

swaging on one side lying opposite a i plain unswaged portion of the carrier onthe j to tions of the carrier wall first in other side of the inserted wall.

tion,

the wall will assume a sinuous formacally tion 'althoughin effect and practice, this sinuo ity is not appreciable and will not interfere with the perfect guidance of the needle'stem,

wall closely in its groove being ressed against both walls, first in one directlon and the walls but will serve to hold the needle then in the other. By this construction the inserted walls will be held firmly throughout their len h.

They may e removed however, by applying pressure to them longitudmally, for which purpose each of the walls is provided at its lower portion and in the edge thereof, with a notch 7 and by placing a suitable implement, as a punch, in this notch and at a slight angle to the plane of the edge, the wall can be forced out of the groove by applying mallet or hammer blows to the upper end of the punch or implement.

A new wall can be inserted grip it, as the groove has been forced to the exact width re uired.-

n Fig. 2 the heavily shaded cross hatching indlcates diagrammatically the portion of the metal which is more or less affected by the swaging of the metal of the needle carrier this affected area extending substantially to the bottom of the groove.

By swaging in spots as described above, the inserted walls will be gripped firml and yet they may be removed and replaced Further, this spot system of swaging maintains the carrier of the prescribed general formation and spacing and the general line of the insert is maintained straight.

In Fig. 8 I show an arbor at C on which the cylinder, if this is the form of needle carrier employed, is mounted for indexing and D represents a pres or ram to apply power to the swagingimplement which is shown in position to receive the premure.

What I claim is 1. A needle carrier having needle guiding walls inserted in grooves therein, the metal of the carrier between the adjacent walls being swaged in spots inwardly and throughout an area from wall to wall to hold' both walls in place.

2. A needle carrier having walls inserted in grooves thereof, the metal of the carrier being upset in spots first on one side of any given wall and then on the other, the swaged spots on one side of the wall being opposite unswaged portions'on the opposite side of the wall, substantially as descrlbed.

3. A needle carrier having walls inserted in grooves thereof, the metal of the carrier between the walls being pressed inwardly'in spots to hold the walls in place, said spots being in staggered relation throughout the needle carrier, substantially as described.

In testimony whereof, I aflix my signature.

ALBERT M. PIGEON. 

